判断，如果是打开状态，再点击该按钮则恢复到初始状态。

Judge, if the state is open, then click on the button will restore to the original state.

youdao

判断，如果是打开状态，再点击该按钮则恢复到初始状态。

Judge, if the state is open, then click on the button will restore to the original state.

youdao